I don't think anyone is condoning cheating. Personally I find those that cheat revolting. You want to sleep around, leave the relationship. There is no grey area for me. But where does it end? Cheating is not illegal. As I saw someone else say what if it was an abortion clinic hacked by people that found abortion morally abhorrent? Would that be ok bc they disagreed with it?
This is the hackers playing god based on their own value judgments. It's a value judgment I support (disagreeing with cheating, not agreeing with the hacking) but that doesn't make it ok to plaster people's personal and financial information for billions to see.
And Anna Duggar will stay. No doubt there. She will give a statement that her husband has apologised and repented to god and she forgives him. Like all fundamentalist religion the women are so brainwashed they actually reinforce and support their own servitude.